Question

preciso resolver essas equacoes a)4x+3(x-1)=67 ,b)7x-2(x+4)=4(x+10) ,c)9x-6(x+3)=2(x-3), d)6(x-5)=x-2(x+3) ,e)4x-3(x+9)=56, f)5x-60=4(x-5) ,g)9x-2(x-10)=130 h)7x-2x=70 i)9x-x=2(x+150 me ajude

Answer 1

a)4x+3(x-1)=67
   4x+3x-3=67
   7x-3=67
   7x=67+3
   7x=70
   x=70/7
   x=10

b)7x-2(x+4)=4(x+10)
   7x-2x-8=4x+40
   5x-4x=40+8
   x=48

c)9x-6(x+3)=2(x-3)
   9x-6x-18=2x-6
   9x-6x-2x=-6+18
   x=12

d)6(x-5)=x-2(x+3)
   6x-30=x-2x-6
   6x+2x-x=-6+30
   7x=24
   x=24/7

e)4x-3(x+9)=56
   4x-3x-27=56
   x=56+27
   x=83
 
f)5x-60=4(x-5)
  5x-60=4x-20
  5x-4x=-20+60
  x=40 

g)9x-2(x-10)=130
   9x-2x+20=130
   7x=130-20
   7x=110
   x=110/7
   
h)7x-2x=70
   5x=70
   x=70/5
   x=14

i)9x-x=2(x+150)
  8x=2x+300
  8x-2x=300
  6x=300
  x=300/6
  x=50



   

Answer 2

Olá,

Vamos lá,

a)4x+3(x-1)=67
4x + 3x - 3 = 67
7x = 67 + 3
7x=70
x = 70/7
x=10

b)7x-2(x+4)=4(x+10)
7x -2x -8 = 4x +  40
7x -2x-4x= 40 +8
x = 48

c)9x-6(x+3)=2(x-3)
9x - 6x -18 = 2x - 6
9x-6x-2x= -6 +18
x = 12


d)6(x-5)=x-2(x+3)
 6x-30= x -2x-6
6x+2x -x= -6 +30
7x = 24
x = 24/7

e)4x-3(x+9)=56
4x -3x - 27 = 56
x = 56 + 27
x = 83

f)5x-60=4(x-5)
5x - 60 = 4x - 20
5x -4x=-20 + 60
x = 40

g)9x-2(x-10)=130
9x -2x + 20 = 130
7x = 130 -20
7x = 110
x = 110/7 

h)7x-2x=70
5x = 70
x = 70/5

i)9x-x=2(x+150)
8x = 2x + 300
8x - 2x = 300
6x = 300
x= 300/6
x = 50